body{
  text-align: center;
}
.button{
  margin: 10px;
}
.overlayContents{
  padding: 10px;
  border-width: 2px;
  border-style: solid;
  border-radius: 15px;
  height: 150px;
}
.dx-theme-ios .overlayContents{
  border-color:#43628D;
  background-color:#F7F7F7;
}
.dx-theme-android .overlayContents{
  border-color:#FFFFFF;
  background-color:#5F5F5F;
}
.dx-theme-win8 .overlayContents{
  border-color: #E4E4E4;
  background-color:#333333;
}